PHP, MySQL and Apache (pdf) - CEMS

UQC103S1 UFCE47-20-1 Systems Development

uqc103s/UFCE47-20-1 PHP-mySQL

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Who? Email: [email protected] Web Site www.cems.uwe.ac.uk/~jedawson www.cems.uwe.ac.uk/~jtwebb/uqc103s1/ uqc103s/UFCE47-20-1 PHP-mySQL

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HELP is at HAND

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PHP and mySQL A crash course „

In this lecture we will consider: „ „ „ „

What is mySQL? Why PHP and mySQL? How to get and install PHP/mySQL Some SQL „

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Using mySQL (command line)

Using PHP and mySQL uqc103s/UFCE47-20-1 PHP-mySQL

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What is mySQL? „ „

The World’s Most Popular Open Source Database „

A DBMS - Database Management System „ „

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more than 4 million active installations Supports a database and allow client/server interactions (storing and retrieving information) On a large system a computer may be solely dedicated to running the DBMS

A DBA (DataBase Administrator) usually manages the database Usually a DBMS is very expensive to buy and/or maintain.

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mySQL has … „ „ „ „ „ „ „ „

Speed - written in C/C++, multithreaded,optimised Full data set - supports: „

float,double, enum, date, char, varchar etc..

Full Command set (SQL92 compliant) „

select, insert, delete, show, "aliases" etc

Functions - e.g. avg(), sum(), max() Security - privilege and password system Scalable - can take billions of rows of data Large character set for internationalisation Tools - admin and other access uqc103s/UFCE47-20-1 PHP-mySQL

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Why PHP and mySQL „

MySQL is a key part of LAMP (Linux, Apache, MySQL, PHP / Perl / Python), a fast growing open source enterprise software stack. More and more companies are using LAMP as an alternative to expensive proprietary software stacks because of its lower cost and freedom from lock-in. http://www.mysql.com/company/index.html

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How to get and install PHP/mySQL „

MySQL „

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NOTE: In Apache users web pages are in install_dir\htdocs

http://www.mysql.com/downloads/index.html

But don’t forget (mini -XAMPP) !! Apache/mySQL/PHP/Perl - download and install instructions (the "old" method should work OK) „ „

http://www.apachefriends.org/xampp-windows-en.html mini-xampp download is about 13 Mb

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Starting Apache and mySQL „ „

Scripts to start and stop are in the minixampp install directory Starting Apache starts an HTTP service on port 80 (default) „

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Starting mySQL starts a service on port 3066 (default) „ „

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http://localhost/ or http://127.0.0.1/ NOTE: XAMPP contains a good admin tool for mySQL http://localhost/phpmyadmin/

Apache (minixampp) users web pages are in: install_dir\htdocs

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Stopping and Starting …

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Basic SQL „

SQL - Structured Query Language „

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"sequel" or "ess-cue-el"

We will consider: „ „ „ „ „ „

creating a database creating a table populating a table (inserting data) viewing a table (selecting data and ordering it) changing data (updating data) deleting data

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Using SQL with mySQL „ „

In the simplest case can use mySQL "on the command line" (DOS prompt) the command to use mysql : „ „ „ „

install_dir\mysql\bin\mysql get a command prompt and change to the bin folder (or add mysql to your path) make sure mysql service has been started type "mysql" on the command line

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Connecting to mySQL creating a database and a table

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Populating a table Viewing contents

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More about select …

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Changing and Deleting Data

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Using mySQL with PHP „

Example One: „ „ „ „ „ „

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connect to mySQL select a database define a query execute query present results free resources

Program - mysql1.php

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PHP/mySQL - column headings „

We can add a bit more detail: „ „ „ „ „

improved formatting order by in select insert new data adding column names LINK: mysql2.php

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Using PHP with HTML forms The form … „

PHP is commonly used to process HTML forms „

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cf. CGI programs

See search1.html

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The PHP … „ „ „ „ „ „

Check input is OK connect to database run query check output process as before See: form1.php

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Some Helpful URLs „

mySQL - reference and tutorial „

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PHP/mySQL tutorial „

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http://www.mysql.com/doc/en/Introduction.htmlPHP/mySQL tutorial http://www.mysql.com/doc/en/Tutorial.html http://hotwired.lycos.com/webmonkey/99/21/index2a.html?t w=programming

Learn SQL „

http://www.w3schools.com/sql/default.asp

PHP to MS Access (ODBC) example „

http://www.w3schools.com/php/php_db_odbc.asp

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